ZJY Children breathable mesh knee protection of baby's knee Mix Color & Little bear and frog 4 Pairs Size: suitable for the baby from 0 to 3 ages. not stretching 15-17 cm long, knee width is 12 cm, stretching back knee to protect the mouth width to 30 cm (perimeter) Set of 4, send random color. Color: , pink, blue, green. yellow Surface Material: cotton, middle: foam. comfortable to wear, not harm the baby skin. Protect your lovely baby from hurt, also if winter protect the baby leg warmer. Also can use it as elbow protector, protect the lovely baby armer. Adjustable kneepad so can fit the baby leg perfectly.